Given my recent hectic work schedule, I am drifting behind a bit in my SBo updates. However, I was able to squeeze out a bit of time to update test a the Nvidia-390.59 proprietary drivers for Slackware 14.2 stable kernel 4.4.132 updates. So far so good. I haven't had time to test the multilib compat32 yet (Steam, WINE, etc).
Let me know of any issues, especially with the pure 32-bit Slackware. The only 32-bit Slackware install I have available is a MSI Atom netbook, besides a qemu...